As they already said, there's a Module to do this ... or several (TMTOWTDI) ... but
there's also a really cute expression that's worth grokking-in-fullness, even if you should use the module instead, since it's a lovely example of s///g and s///e together.
From Effective Perl Programming (Hall with Schwartz, 0-201-41975-0 not linked to Fatbrain, please support your local meatspace bookstore),
$_ = "a%5eb";
which also says only one paragraph later
$_ = uri_unescape "a%5eb";
Both will result in $_ eq "a^b".
and Yes, it will handle "9%25EA" correctly, tranforming it to "9%EA" and not eating the output %. See s///g.
(What's 9%EA? maybe fair share for 11-way split, less crumbs.)
-- Bill / n1vux
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